CN219202167U

CN219202167U - Intelligent switch

Info

Publication number: CN219202167U
Application number: CN202320250649.3U
Authority: CN
Inventors: 王锦涛; 佟帅
Original assignee: Hangzhou Tuya Information Technology Co Ltd
Current assignee: Hangzhou Tuya Information Technology Co Ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-06-16
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses an intelligent switch which comprises an on-state power taking module, an off-state power taking module, a charging current limiting module, a power-on control module, a switch module and a communication module. The switch module is connected with the element to be controlled in series; the communication module controls the on and off of the switch module; the on-state electricity taking module takes electricity from an alternating current power supply when the switch is in a conducting state so as to supply power for the charging current limiting module and the power-on control module; the off-state electricity taking module takes electricity from an alternating current power supply when the switch is in an off state so as to supply power for the charging current limiting module and the power-on control module; the charging current limiting module is used for respectively taking electricity from the on-state electricity taking module and the off-state electricity taking module and storing the electricity, supplying power for the communication module by the energy storage power supply and limiting the power supply current of the communication module; the power-on control module outputs a pulse to control the switch module to switch to the off state, and the switching time for switching to the off state is consistent with the width time of the pulse. The utility model can realize quick power-on of the switch.

Description

Intelligent switch

Technical Field

The utility model relates to the technical field of the Internet of things, in particular to an intelligent switch.

Background

With the development of IOT industry and the rise of smart home, more and more home electrical equipment is intelligent and networked.

The intelligent single-fire switch can intelligently control load equipment such as lamps and the like by only connecting the switch in series on one live wire or zero wire. Two paths of power supply are needed inside the switch of the existing intelligent single-fire switch, namely off-state power supply and on-state power supply. Because of the specificity of the power taking capability of the switch, the smaller the power of the general load lamp, the weaker the power taking capability of the single-fire switch in the on state is, so that the intelligent switch is required to work under lower power consumption. The technical scheme adopted commonly increases the energy storage unit in the switch, and the wireless communication protocol module normally works through the energy supply of the energy storage unit. However, after the energy storage unit is added, the first power-on time of the switch is longer, the power is turned on and off after the control is performed for many times, and the charging time is long.

Disclosure of Invention

Therefore, the utility model aims to provide an intelligent switch which can realize quick power-up of the switch and solve the technical problem that the switch in the prior art is long in power-up time for the first time.

In order to achieve the above purpose, the utility model provides an intelligent switch, which comprises an on-state power taking module, an off-state power taking module, a charging current limiting module, a power-on control module, a switch module and a communication module. The switch module is connected in series with the element to be controlled; the communication module is connected with the switch module and used for controlling the on-off of the switch module; the on-state electricity taking module is respectively connected with the charging current limiting module and the power-on control module, and is used for taking electricity from the alternating current power supply when the switch module is in a conducting state and providing a first power supply for the charging current limiting module and the power-on control module; the off-state electricity taking module is respectively connected with the charging current limiting module and the power-on control module, and is used for taking electricity from the alternating current power supply when the switch module is in an off state and providing a first power supply for the charging current limiting module and the power-on control module; the charging current limiting module is connected with the communication module and is used for respectively taking electricity from the on-state electricity taking module and the off-state electricity taking module and storing the electricity, supplying power for the communication module by the energy storage power supply and limiting the power supply current to the communication module; and the power-on control module is respectively connected with the switch module and the charging current limiting module and is used for outputting a pulse to control the switch module to switch to the off state when the intelligent switch is electrified for the first time, and the switching time for switching to the off state is consistent with the width time of the pulse.

Further, the intelligent switch also comprises a voltage monitoring module and a voltage adjusting module, wherein the voltage monitoring module is respectively connected with the charging current limiting module and the communication module and is used for acquiring an energy storage power supply from the charging current limiting module, monitoring the voltage of the energy storage power supply and outputting voltage monitoring signals to the communication module and the voltage adjusting module respectively; the communication module is used for determining whether to execute a current limiting action on the charging current limiting module according to the voltage monitoring signal; the voltage adjusting module is connected with the communication module and used for acquiring the energy storage power supply and adjusting the energy storage power supply to be suitable for the voltage of the communication module, and controlling the communication module to work in a low-power consumption mode when the voltage of the energy storage power supply is lower than a voltage threshold value.

Further, the on-state power taking module comprises a first MOS tube, a second MOS tube, a first chip, a first diode, a second diode, a third diode, a first capacitor and a second capacitor, wherein the drain electrode of the first MOS tube is connected with the live wire, the source electrode of the first MOS tube is connected with the source electrode of the second MOS tube, and the grid electrode of the first MOS tube is connected with the output end of the first chip; the drain electrode of the second MOS tube is connected with the anode of the second diode, and the grid electrode of the second MOS tube is connected with the output end of the first chip; the anode of the first diode is connected with the live wire, the cathode of the first diode is connected with the first end of the first capacitor, and the second end of the first capacitor is grounded; the anode of the second diode is connected with the switch module, and the cathode of the second diode is connected with the first end of the first capacitor; the anode of the third diode is connected with the same-phase end of the first chip, and the cathode of the third diode is connected with the cathode of the second diode; the first end of the second capacitor is connected with the same-phase end of the first chip, and the second end of the second capacitor is grounded; the first chip has its inverting terminal input a voltage division threshold.

Further, the power-on control module comprises a third MOS tube, a first double-diode, a second chip, a first resistor, a second resistor, a third capacitor, a third resistor, a fourth diode and a fourth capacitor; and the source electrode of the third MOS tube is connected with the first power supply, the grid electrode of the third MOS tube is connected with the first end of the first resistor, and the drain electrode of the third MOS tube is connected with the first end of the third resistor: the second end of the first resistor is connected with a first power supply; the first end of the second resistor is connected with the first end of the third capacitor, and the second end of the second resistor is connected with the grid electrode of the third MOS tube; the first double-triode is grounded at a first pin, the second pin is connected with the second end of the third resistor, the third pin is connected with the second end of the third capacitor, the fourth pin is grounded, the fifth pin is connected with the output end of the second chip, and the sixth pin is connected with the switch module; the fourth resistor is connected between the first pin and the second pin of the first double-triode in a bridging way; the anode of the fourth diode is connected with the drain electrode of the third MOS tube, and the cathode of the fourth diode is connected with the switch module; a first end of the fourth capacitor is connected with the cathode of the fourth diode, and a second end of the fourth capacitor is grounded; and the input end of the second chip is input with the first power supply, and the output end of the second chip is connected with the charging current limiting module.

Further, the power-on control module comprises a third chip, a fifth diode, a fifth capacitor, a sixth capacitor, a fifth resistor, a sixth resistor and a fourth MOS tube. The input end of the first chip is connected with a first power supply, and the output end of the first chip is connected with the first end of the fifth capacitor; the anode of the fifth diode is connected with the first power supply, and the cathode of the fifth diode is connected with the switch module; the first end of the fifth resistor is connected with the second end of the fifth capacitor and the charging current limiting module respectively, and the second end of the fifth resistor is connected with the grid electrode of the fourth MOS tube; a sixth capacitor, the first end of which is connected with the cathode of the fifth diode, and the second end of which is grounded; the drain electrode of the fourth MOS tube is connected with the switch module, and the source electrode of the fourth MOS tube is grounded; and the first end of the sixth resistor is connected with the grid electrode of the fourth MOS tube, and the second end of the sixth resistor is grounded.

Further, the charging current limiting module comprises a fifth MOS tube, a second double-triode, a fourth chip, a seventh resistor and a super capacitor. The source electrode of the fifth MOS tube is connected with the first power supply, the source electrode of the fifth MOS tube is connected with the sixth pin of the second double-triode, and the drain electrode of the fifth MOS tube is connected with the input end of the fourth chip; the output end of the fourth chip is connected to the positive electrode of the super capacitor, and the enabling end of the fourth chip is connected with the output end of the second chip; the anode of the super capacitor is grounded, an energy storage power supply is output by the anode of the super capacitor, and the energy storage power supply is input to the voltage monitoring module and the voltage adjusting module; a seventh resistor, the first end of which is connected with the grid electrode of the fourth MOS tube, and the second end of which is connected with the fifth pin of the second double-triode; and the second double-triode, the second pin and the third pin are both connected with the output end of the third chip, and the first pin and the fourth pin are grounded.

Further, the charging current limiting module further comprises a sixth MOS tube and an eighth resistor, wherein the eighth resistor is connected with the input end of the fourth chip at the first end and the output end of the fourth chip at the second end; and the drain electrode of the sixth MOS tube is connected with the enabling end of the fourth chip, the grid electrode of the sixth MOS tube is connected with the communication module, and the source electrode of the sixth MOS tube is grounded.

Further, the voltage monitoring module includes a fifth chip, a sixth chip, a ninth resistor, and a tenth resistor. The input end of the fifth chip is connected with the energy storage power supply, and the output end of the fifth chip is connected with the power supply end of the sixth chip; a ninth resistor, the first end of which is connected with the first end of the tenth resistor, the second end of which is connected to the power supply, and the second end of which is grounded; and the non-inverting end of the sixth chip is connected with the energy storage power supply, the inverting end of the sixth chip is connected with the voltage threshold determined by the ninth resistor and the tenth resistor, and when the energy storage power supply input by the non-inverting end is larger than the voltage threshold, the output end of the sixth chip outputs a high-level signal to the communication module and the voltage regulation module, and otherwise, outputs a low-level signal to the communication module and the voltage regulation module.

Further, the voltage adjusting module includes a seventh chip, a sixth diode, and a seventh diode. The seventh chip is used for adjusting the received energy storage power supply to a power supply suitable for the communication module so as to supply power for the communication module; the anode of the sixth diode is connected with the voltage detection module, and the cathode of the sixth diode is connected with the enabling end of the seventh chip; and the anode of the seventh diode is connected with the communication module, the cathode of the seventh diode is connected with the enabling end of the seventh chip, and when the anode of the sixth diode and the anode of the seventh diode are both input with low-level signals, the seventh chip is controlled to stop working.

Further, the switch module comprises at least one magnetic latching relay, a seventh MOS tube and an eighth MOS tube. The magnetic latching relay is characterized in that a second pin is connected with an on-state electricity taking module, a third pin is a live wire output pin, a first pin is connected with an electricity charging control module, a fourth pin is connected with a drain electrode of a seventh MOS tube, and a fifth pin is connected with the electricity charging control module; a seventh MOS tube, the grid of which is connected with the communication module and used for controlling the on of the switch module, and the source of which is grounded; and the grid electrode of the eighth MOS tube is connected with the communication module and used for controlling the switch-off of the switch module, the drain electrode of the eighth MOS tube is connected with the first pin of the magnetic latching relay, and the source electrode of the eighth MOS tube is grounded.

The utility model provides an intelligent switch, which controls the switch to be powered on in an off state when the switch is powered on each time so as to realize short power-on time of the switch and avoid the technical problem of long power-on time of the switch for the first time; the method comprises the steps that voltage monitoring is achieved on an energy storage power supply, when the energy storage power supply is lower than a voltage threshold value, a communication module is controlled to enter a low-power consumption mode, the energy storage power supply is charged, and when the energy storage power supply is higher than the voltage threshold value, the communication module enters a normal mode; the charging current limiting circuit is used for realizing the charging of the energy storage unit by small current, so that the problem that the lamp is turned off and blinks is avoided; the communication module adopts a lower power consumption design, the lamp compatibility is better, and the user experience is effectively improved.

Drawings

FIG. 1 is a schematic diagram of a system for providing an intelligent switch according to the present utility model;

FIG. 2 is a schematic circuit diagram of an intelligent switch provided in accordance with the present utility model;

FIG. 3 is a schematic circuit diagram of an intelligent switch provided in accordance with the present utility model;

FIG. 4 is a schematic circuit diagram of a smart switch provided in accordance with the present utility model;

FIG. 5 is a schematic circuit diagram of a smart switch provided in accordance with the present utility model;

FIG. 6 is a schematic circuit diagram of a smart switch provided in accordance with the present utility model;

FIG. 7 is a schematic circuit diagram of a smart switch provided in accordance with the present utility model;

fig. 8 is a schematic circuit diagram of an intelligent switch provided in accordance with the present utility model.

Detailed Description

The present utility model will be described in detail below with reference to the specific embodiments shown in the drawings, but these embodiments are not limited to the present utility model, and structural, method, or functional modifications made by those skilled in the art based on these embodiments are included in the scope of the present utility model.

In an embodiment of the present application, as shown in fig. 1, an intelligent switch 100 includes an on-state power taking module 11, an off-state power taking module 12, a charging current limiting module 13, a power-on control module 14, a switch module 15, and a communication module 16. The switch module 15 is connected in series with the element 200 to be controlled. The communication module 16 is connected to the switch module 15, and is used for controlling on and off of the switch module 15. The on-state electricity taking module 11 is respectively connected with the charging current limiting module 13 and the power-on control module 14, and is used for taking electricity from an alternating current power supply when the switch module 15 is in a conducting state so as to supply electricity for the charging current limiting module 13 and the power-on control module 14. The off-state electricity taking module 12 is respectively connected with the charging current limiting module 13 and the power-on control module 14, and is used for taking electricity from the alternating current power supply when the switch module 15 is in an off state so as to supply electricity for the charging current limiting module 13 and the power-on control module 14. The charging current limiting module 13 is connected with the communication module 16, and is used for respectively taking electricity from the on-state electricity taking module 11 and the off-state electricity taking module 12 and storing the electricity, and supplying the energy storage power source to the communication module 16 and limiting the power supply current to the communication module 16. The power-on control module 14 is connected with the switch module 15, and is configured to output a pulse to control the switch module 15 to switch to an off state when the intelligent switch 100 is powered on for the first time, where the switching time for switching to the off state is consistent with the width time of the pulse. The pulse width time is used to enable the magnetic latching relay to switch to an off state, and once the magnetic latching relay switches to the off state, the off state is maintained unless the communication module performs magnetic latching relay control. I.e. the action time for switching off the state coincides with the pulse width time.

The communication module 16 integrates a microprocessor and an antenna, and is used for establishing communication connection between the intelligent switch 100 and the router, and controlling the on and off of the switch module 15 through control signals. The power-on control module 14 ensures that the switch is powered on in the off state every time, shortens the power-on time of the switch, and avoids the technical problem of long power-on time of the switch for the first time. The charging current limiting module 13 is used for realizing small-current energy storage charging, so that the technical problems of lamp turn-off flickering and ghost fire of the lamp are solved.

As an alternative implementation, as shown in fig. 1, the intelligent switch 100 further includes a voltage monitoring module 17 and a voltage adjustment module 18. The voltage monitoring module 17 is respectively connected with the charging current limiting module 13 and the communication module 16, and is used for acquiring an energy storage power supply from the charging current limiting module 13, monitoring the voltage of the energy storage power supply, and outputting voltage monitoring signals to the communication module 16 and the voltage adjusting module 18 respectively. The communication module 16 is configured to determine whether to perform a current limiting action on the charging current limiting module 13 according to the voltage monitoring signal. The voltage adjustment module 18 is connected to the communication module 16, and is configured to obtain the energy storage power source and adjust the voltage of the energy storage power source to be suitable for the communication module 16, and control the communication module 16 to operate in a low power consumption mode when the voltage of the energy storage power source is lower than a voltage threshold. The voltage monitoring module 17 is used for monitoring the energy storage power supply, when the voltage of the energy storage power supply is lower than a preset voltage threshold value, the communication module 16 is switched to a low-power consumption mode, the charging current limiting module 13 is used for charging the energy storage power supply, and when the voltage of the energy storage power supply is higher than the preset voltage threshold value, the communication module 16 is switched to a normal working mode.

As shown in fig. 2, as an alternative implementation manner, the on-state power taking module 11 includes a first MOS transistor Q1, a second MOS transistor Q2, a first chip U1, a first diode D1, a second diode D2, a third diode D3, a first capacitor C1, and a second capacitor C2. The drain electrode of the first MOS tube Q1 is connected with the live wire L1, the source electrode of the first MOS tube Q2 is connected with the source electrode of the second MOS tube Q2, the grid electrode of the second MOS tube Q2 is connected with the output end out of the first chip U1, the drain electrode of the second MOS tube Q2 is connected with the anode electrode of the second diode D2, and the grid electrode of the second MOS tube Q2 is connected with the output end out of the first chip U1. The anode of the first diode D1 is connected with the live wire L1, the cathode of the first diode D1 is connected with the first end of the first capacitor C1, and the second end of the first capacitor C1 is grounded. The anode of the second diode D2 is connected to the switch module 15, and the cathode thereof is connected to the first end of the first capacitor C1. And the anode of the third diode D3 is connected with the non-inverting terminal +in of the first chip U1, and the cathode of the third diode D3 is connected with the cathode of the second diode D2. And a first end of the second capacitor C2 is connected with the non-inverting end +in of the first chip U1, and a second end of the second capacitor C is grounded. The first chip U1 has an inverting terminal-in for inputting a voltage division threshold. The on-state power taking module 11 utilizes two MOS tubes to switch and take power twice in each commercial power period, and a live wire or a zero wire is input into a power supply to provide power for the charging current limiting module 13 and the power-on control module 14. The first MOS transistor Q1 and the second MOS transistor Q2 are NMOS transistors, and power is taken under the condition that the element to be controlled 200 is on by switching on and off. The first chip U1 is an operational amplifier chip, and the output of the operational amplifier chip is used for controlling the on and off of the first MOS transistor Q1 and the second MOS transistor Q2. The third diode D3 is a zener diode, and charges the second capacitor C2 when the voltage is higher than the set value, and meanwhile, the voltage at the positive terminal and the voltage at the negative terminal of the first chip U1 are compared to determine whether the output is at a high level or a low level. When the element to be controlled 200 is switched to the off state, the first MOS transistor Q1 and the second MOS transistor Q2 are temporarily turned off, and the first diode D1 and the second diode D2 are used for taking power from both the positive half cycle and the negative half cycle of the ac mains supply, so that the power removing capability is enhanced, and the output of the first chip U1 is low level. Along with the live wire charges the first capacitor C1, the third diode D3 charges the second capacitor C2 after having a voltage stabilizing effect, the positive phase voltage of the first chip U1 is gradually increased, and when the positive phase terminal voltage of the first chip U1 is greater than the reference voltage of the reverse phase terminal, the output of the first chip U1 is in a high level. During this charging period, energy is stored on the first capacitor C1 and the storage capacitor, and the voltage gradually increases to the design value. When the output of the first chip U1 is at a high level, the first MOS transistor Q1 and the second MOS transistor Q2 are turned on at this time, and no power-on operation is performed, where the reference voltage at the inverting terminal of the first chip U1 is a preset voltage division threshold, and the voltage division threshold may be implemented by a resistor voltage division circuit. The third diode D3 has no leakage current, the voltage and energy of the second capacitor C2 are gradually consumed by the resistor, and when the voltage of the second capacitor C2 is less than the reference voltage of the inverting terminal of the first chip U1, the output of the first chip U1 is at a low level. During the discharging period, the first chip U1 can repeat the control process by selecting specific and proper element parameters, namely, the power-taking operation can be performed in each half period, so that the problem of flashing of the load lamp when the load lamp is turned on is avoided.

The off-state electricity taking module 12 takes electricity from an alternating current power supply when the switch module 15 is in an off state, namely, the element 200 to be controlled is in the off state, the electricity taking is performed by utilizing the voltage difference between the input end and the output end of the switch, and the output power supply supplies electricity for the charging current limiting module 13 and the power-on control module 14.

As shown in fig. 3, as an alternative implementation manner, the power-on control module 14 includes a third MOS transistor Q3, a first dual-triode QQ1, a second chip U2, a first resistor R1, a second resistor R2, a third capacitor C3, a third resistor R3, a fourth resistor R4, a fourth diode D4, and a fourth capacitor C4. And the source electrode of the third MOS tube Q3 is connected with the first power supply V, the grid electrode of the third MOS tube Q3 is connected with the first end of the first resistor R1, and the drain electrode of the third MOS tube Q3 is connected with the first end of the third resistor R3. The second terminal of the first resistor R1 is connected to a first power supply V. And the first end of the second resistor R2 is connected with the first end of the third capacitor C3, and the second end of the second resistor R2 is connected with the grid electrode of the third MOS tube Q3. The first double-triode QQ1 has a first pin 1 grounded, a second pin 2 connected to the second end of the third resistor R3, a third pin 3 connected to the second end of the third capacitor C3, a fourth pin 4 grounded, a fifth pin 5 connected to the output terminal Vout of the second chip U2, and a sixth pin 6 (k1_re) connected to the switch module 15. A fourth resistor R4 is connected across the first pin 1 and the second pin 2 of the first double-triode QQ 1. The anode of the fourth diode D4 is connected to the drain of the third MOS transistor Q3, and the cathode (signal v_relay) is connected to the switch module 15. And a first end of the fourth capacitor C4 is connected with the cathode of the fourth diode D4, and a second end of the fourth capacitor C is grounded. The input terminal VDD of the second chip U2 inputs the first power V, and the output terminal Vout (signal RST) is connected to the charging current limiting module 13. The control logic of the power-on control module 14 is as follows: when the intelligent switch 100 is powered on in an on state, the on state power taking module 11 outputs a first power supply V to the power on control module 14, the third MOS transistor Q3 is a PMOS transistor, and at this time, the gate thereof is at a high level, and the third MOS transistor Q3 is not turned on. The second chip U2 is a reset chip, and when the on power module 11 outputs the first power V to the second chip U2, the output terminal Vout (signal RST) of the second chip U3 outputs a high level. The upper tube of the first double-triode QQ1 is turned on, the second end of the third capacitor C3 is turned on to ground, the second end of the third capacitor C3 is connected to the source of the third MOS tube Q3 through the second resistor R2, and is connected to the power supply through the first resistor R1. At this time, the first power V charges the third capacitor C3 through the first resistor R1 and the second resistor 2, and at the same time, the gate of the third MOS transistor Q3 is pulled low, and the third MOS transistor Q3 is turned on. After the third MOS transistor Q3 is turned on, the first power V is supplied to the lower tube of the first double-triode QQ1 through the third resistor R3, and the sixth leg (signal k1_re) of the first double-triode QQ1 is pulled down to ground. While the voltage of the first power supply V builds up a voltage on the signal v_delay through the fourth diode D4. After the third capacitor C3 is fully charged, the gate of the third MOS transistor Q3 is pulled up by the first power V due to no current, and the third MOS transistor Q3 is not turned on. The sixth leg (signal k1_re) of the first double-triode QQ1 returns and the voltage of signal v_relay is the voltage across the fourth capacitor C4. The charging time of the third capacitor C3 is the pulse width time of the sixth leg (signal k1_re). After the intelligent switch 100 is electrified, the third capacitor C3 is charged, the third MOS transistor Q3 at the voltage rear end of the first power supply V is conducted, and through the action of the first double-triode QQ1, the signal V_RELAY and the signal K1_re generate voltage pulses of more than 3V, so that the magnetic latching RELAY in the switch module 15 is switched to be in an off state, and the function of controlling the electrified switching off state is realized. When the intelligent switch 100 is powered on for the first time, the power-on control module 14 makes the k1_re generate a low-level pulse of several tens of ms, so that the switch module 15 is switched to an off state, i.e. the intelligent switch 100 is powered on in an off state, so as to ensure that the power-on time of the intelligent switch 100 is short.

As shown in fig. 4, as an alternative implementation manner, the power-on control module 14 includes a third chip U3, a fifth diode D5, a fifth capacitor C5, a sixth capacitor C6, a fifth resistor R5, a sixth resistor R6, and a fourth MOS transistor Q4. The input terminal VDD of the first chip U5 is connected to the first power source V, and the output terminal Vout (signal RST) is connected to the first terminal of the fifth capacitor C5. The fifth diode D5 has an anode connected to the first power source V and a cathode (signal v_relay) connected to the switching module 15. The first end of the sixth capacitor C6 is connected to the cathode of the fifth diode D5, and the second end is grounded. The first end of the fifth resistor R5 is connected to the second end of the fifth capacitor C5 and the charging current limiting module 13, respectively, and the second end of the fifth resistor R5 is connected to the gate of the fourth MOS transistor Q4. The drain (signal k1_re) of the fourth MOS transistor Q4 is connected to the switch module 15, and the source thereof is grounded. The first end of the sixth resistor R6 is connected with the grid electrode of the fourth MOS tube Q4, and the second end of the sixth resistor R6 is grounded. When the intelligent switch 100 is powered on in the on state, the on-state power taking module 11 outputs the first power V to the power on control module 14. The third chip U3 is a reset chip, and when the first power V is established, the RST signal output by the first chip U3 is at a high level. A voltage difference exists between two ends of the fifth capacitor C5, and the output signal RST of the third chip U3 charges the fifth capacitor C5. The fourth MOS transistor Q4 is an NMOS transistor, and the grid electrode of the fourth MOS transistor Q4 is conducted in the charging time period of the fifth capacitor C5, so that the drain electrode K1_re signal of the fourth MOS transistor Q4 is pulled down to the ground. The first power supply V is connected to the switch module 15 through the signal v_delay of the cathode of the fifth diode D5, and after the first power supply V is established, the signal v_delay establishes a voltage therewith, and when the fifth capacitor C5 is full, no current flows into the source of the fourth MOS transistor Q4, and the fourth MOS transistor Q4 is not turned on when the sixth resistor R6 is connected to ground. The signal K1_re is restored, and the voltage of the signal V_RELAY is the voltage across the sixth capacitor C6. The charging time of the fifth capacitor C5 is the pulse width time of the signal k1_re. The pulse is sufficient to switch the switch module 15 from an on state to an off state, thereby implementing the function of power-on switching off state control.

As shown in fig. 5, as an alternative implementation manner, the charging current limiting module 13 includes a fifth MOS transistor Q5, a second dual-triode QQ2, a fourth chip U4, a seventh resistor R7, and a supercapacitor EC2. The source of the fifth MOS transistor Q5 is connected with the first power supply V, the source thereof is connected with the sixth pin 6 of the second double-triode QQ2, and the drain thereof is connected with the input end IN of the fourth chip U4. The output end OUT of the fourth chip U4 is connected to the positive electrode of the super capacitor EC2, the negative electrode of the super capacitor EC2 is grounded, and the positive electrode of the super capacitor EC2 outputs an energy storage power supply VCC, and the energy storage power supply VCC is input to the voltage monitoring module 17 and the voltage adjusting module 18. The enable terminal EN of the fourth chip U4 is connected to the output terminal signal RST of the second chip U2. The first end of the seventh resistor R7 is connected with the drain electrode of the fourth MOS tube Q4, and the second end of the seventh resistor R7 is connected with the fifth pin 5 of the second double-triode QQ 2. The second pin and the third pin of the second double-triode QQ2 are connected with the output end signal RST of the third chip U3, and the first pin and the fourth pin are grounded. The input of the charging current limiting module 13 is a first power supply V, the output is an energy storage power supply VCC, and power is provided for the voltage monitoring module 17 and the voltage adjusting module 18. EC2 is a super capacitor for storing energy VCC to power the communication module 16. During the operation of the power-on control module 14, it is necessary to ensure that the fifth MOS transistor Q5 is turned off. The drain electrode of the third MOS transistor Q3 is connected with a seventh resistor R7. When the seventh resistor R7 establishes the first power V, the right tube of the second double-triode QQ1 is turned on, the 2-pin, the 3-pin and the 4-pin of the second double-triode QQ1 are all turned on to the ground, the left tube of the second double-triode QQ1 is turned off, and the fifth MOS tube Q5 is turned off. When the power-on control module 14 completes the work, the third MOS transistor Q3 is not conducted. The output end RST signal of the second chip U2 enables the fourth chip U4, the left tube of the second double-triode QQ2 is conducted, the fifth MOS tube Q5 is conducted, and the first power supply V charges the energy storage power supply VCC of the super capacitor EC2 through the fourth chip U4. At this time, the voltage of the energy storage power VCC is rapidly charged from 0V to a voltage threshold or higher, and power is supplied to the communication module, and the communication module 16 operates.

As an alternative implementation manner, as shown in fig. 5, the charging current limiting module 13 further includes a sixth MOS transistor Q6 and an eighth resistor R8. The first end of the eighth resistor R8 is connected to the input end of the fourth chip U4, and the second end thereof is connected to the output end out of the fourth chip U4. The drain electrode of the sixth MOS transistor Q6 is connected to the enable end EN of the fourth chip U4, the gate electrode thereof is connected to the communication module 16, and the source electrode thereof is grounded. After the communication module 16 works, the communication module 16 outputs a control signal A_CTL to the grid electrode of the sixth MOS tube Q6, the A_CTL signal is in a high level, the sixth MOS tube Q6 is conducted, the enable end EN of the fourth chip U4 is pulled down, the fourth chip U4 is turned off, the super capacitor EC2 is subjected to current limiting charging through the eighth resistor R8, and the problem of lamp turning-off flickering is solved.

As shown in fig. 6, as an alternative implementation, the voltage monitoring module 17 includes a fifth chip U5, a sixth chip U6, a ninth resistor R9, and a tenth resistor R10. The input end IN of the fifth chip U5 is connected to the energy storage power source VCC for supplying power to the sixth chip U6. The output terminal OUT of the fifth chip U5 is connected to the power supply terminal +vs of the sixth chip U6. The first end of the ninth resistor R9 is connected to the first end of the tenth resistor R10, the second end thereof is connected to the power supply V1, and the second end of the tenth resistor R10 is grounded. The IN-phase terminal +IN of the sixth chip U6 is connected to the energy storage power supply VCC, the opposite-phase terminal-IN is connected to the voltage threshold determined by the ninth resistor R9 and the tenth resistor R10, when the energy storage power supply input by the IN-phase terminal is greater than the voltage threshold, the output terminal of the sixth chip U6 outputs the high-level signal HL_CTL to the communication module 16 and the voltage regulation module 18, and otherwise outputs the low-level signal HL_CTL to the communication module 16 and the voltage regulation module 18. The fifth chip U5 is an LDO voltage-reducing chip, which reduces the voltage of the energy storage power supply VCC to 3.3V and is used for providing a power supply of 3.3V for the sixth chip U6. The sixth chip U6 is an operational amplifier, and the ninth resistor R9 and the tenth resistor R10 are voltage dividing circuits, and the divided voltage is used as a voltage threshold. The voltage monitoring module 17 monitors the stored energy power supply. When the voltage of the energy storage power supply is lower than the preset voltage threshold, the communication module 16 is switched to the low-power consumption mode, the energy storage power supply is charged through the charging current limiting module 13, and when the voltage of the energy storage power supply is higher than the preset voltage threshold, the communication module 16 is switched to the normal working mode.

As shown in fig. 7, as an alternative implementation, the voltage adjustment module 18 includes a seventh chip U7, a sixth diode D6, and a seventh diode D7. The seventh chip U7 adjusts the received voltage of the stored energy power VCC to the power supply 3.3v_w suitable for the communication module 16 to supply power to the communication module 16. The anode of the sixth diode D6 is connected to the control signal hl_ctl output by the voltage monitoring module 17, and the cathode is connected to the enable terminal EN of the seventh chip U7. The anode of the seventh diode D7 is connected to the control signal p_sw output from the communication module 16, and the cathode is connected to the enable terminal EN of the seventh chip U7. When the signals hl_ctl and p_sw are both low-level signals, the enable end EN of the seventh chip U7 is not enabled, the seventh chip U7 stops working, the VCC voltage of the energy storage power supply cannot be reduced to 3.3v_w, and the communication module 16 is powered down to stop working.

As shown in fig. 8, as an alternative implementation, the switch module 15 includes at least one magnetic latching relay K1, a seventh MOS transistor Q7, and an eighth MOS transistor Q8. The second pin 2 of the magnetic latching Relay K1 is connected with the on-state electricity taking module 11, the third pin 3 is a live wire output pin L_OUT, the signal K1_re of the first pin 1 is connected with the power-on control module 14, the fourth pin 4 is connected with the drain electrode of the seventh MOS tube Q7, and the signal V_Relay of the fifth pin 5 is connected with the power-on control module 14. The gate (signal c1_act) of the seventh MOS transistor Q7 is connected to the communication module 16 for controlling the switch module 15 to be turned on, and the source thereof is grounded. The gate (signal c1_rst) of the eighth MOS transistor Q8 is connected to the communication module 16, for controlling the switch module 15 to be turned off, the drain thereof is connected to the first pin 1 of the magnetic latching relay K1, and the source thereof is grounded. The communication module 16 controls the on and off of the magnetic latching relay K1 by the signal c1_act and the signal c1_rst. The power-on control module 14 controls the magnetic latching Relay K1 through the signal V_Relay and the signal K1_re, and is used for switching the magnetic latching Relay K1 to an off state when the intelligent switch 100 is powered on for the first time, so that the power-on time of the intelligent switch 100 is ensured to be reduced, the problem of long power-on time in the on state is avoided, and the user experience is optimized.

Although the preferred embodiments of the present utility model have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the utility model as disclosed in the accompanying claims.

Claims

1. The intelligent switch is characterized by comprising an on-state power taking module, an off-state power taking module, a charging current limiting module, a power-on control module, a switch module and a communication module;

the switch module is connected in series with the element to be controlled;

the communication module is connected with the switch module and used for controlling the on-off of the switch module;

the on-state electricity taking module is respectively connected with the charging current limiting module and the power-on control module, and is used for taking electricity from an alternating current power supply when the switch module is in a conducting state and providing a first power supply for the charging current limiting module and the power-on control module;

the off-state electricity taking module is respectively connected with the charging current limiting module and the power-on control module, and is used for taking electricity from an alternating current power supply when the switch module is in an off state and providing a first power supply for the charging current limiting module and the power-on control module;

the charging current limiting module is connected with the communication module and is used for respectively taking electricity from the on-state electricity taking module and the off-state electricity taking module and storing the electricity, supplying power for the communication module by the energy storage power supply and limiting the power supply current for the communication module;

the power-on control module is respectively connected with the switch module and the charging current limiting module and is used for outputting a pulse to control the switch module to switch to an off state when the intelligent switch is electrified for the first time, and the switching time for switching to the off state is consistent with the width time of the pulse.

2. The intelligent switch of claim 1, further comprising a voltage monitoring module and a voltage adjustment module;

the voltage monitoring module is respectively connected with the charging current limiting module and the communication module and is used for acquiring an energy storage power supply from the charging current limiting module, monitoring the voltage of the energy storage power supply and outputting voltage monitoring signals to the communication module and the voltage adjusting module respectively;

the communication module is used for determining whether to execute a current limiting action on the charging current limiting module according to the voltage monitoring signal;

the voltage adjusting module is connected with the communication module, and is used for acquiring the energy storage power supply, adjusting the energy storage power supply to be suitable for the voltage of the communication module, and controlling the communication module to work in a low-power consumption mode when the voltage of the energy storage power supply is lower than a voltage threshold value.

3. The intelligent switch of claim 2, wherein the on-state power module comprises a first MOS transistor, a second MOS transistor, a first chip, a first diode, a second diode, a third diode, a first capacitor, and a second capacitor;

the drain electrode of the first MOS tube is connected with the live wire, the source electrode of the first MOS tube is connected with the source electrode of the second MOS tube, and the grid electrode of the first MOS tube is connected with the output end of the first chip;

the drain electrode of the second MOS tube is connected with the anode of the second diode, and the grid electrode of the second MOS tube is connected with the output end of the first chip;

the anode of the first diode is connected with the live wire, the cathode of the first diode is connected with the first end of the first capacitor, and the second end of the first capacitor is grounded;

the anode of the second diode is connected with the switch module, and the cathode of the second diode is connected with the first end of the first capacitor;

the anode of the third diode is connected with the same-phase end of the first chip, and the cathode of the third diode is connected with the cathode of the second diode;

the first end of the second capacitor is connected with the same-phase end of the first chip, and the second end of the second capacitor is grounded;

the first chip has an inverting terminal for inputting a voltage division threshold.

4. The intelligent switch of claim 3, wherein the power-on control module comprises a third MOS transistor, a first double-diode, a second chip, a first resistor, a second resistor, a third capacitor, a third resistor, a fourth diode, and a fourth capacitor;

the source electrode of the third MOS tube is connected with the first power supply, the grid electrode of the third MOS tube is connected with the first end of the first resistor, and the drain electrode of the third MOS tube is connected with the first end of the third resistor;

the second end of the first resistor is connected with the first power supply;

the first end of the second resistor is connected with the first end of the third capacitor, and the second end of the second resistor is connected with the grid electrode of the third MOS tube;

the first double-triode is grounded at a first pin, the second pin is connected with the second end of the third resistor, the third pin is connected with the second end of the third capacitor, the fourth pin is grounded, the fifth pin is connected with the output end of the second chip, and the sixth pin is connected with the switch module;

the fourth resistor is connected between the first pin and the second pin of the first double-triode in a bridging way;

the anode of the fourth diode is connected with the drain electrode of the third MOS tube, and the cathode of the fourth diode is connected with the switch module;

the first end of the fourth capacitor is connected with the cathode of the fourth diode, and the second end of the fourth capacitor is grounded;

and the input end of the second chip is input into the first power supply, and the output end of the second chip is connected with the charging current limiting module.

5. The intelligent switch of claim 4, wherein the power-on control module comprises a third chip, a fifth diode, a fifth capacitor, a sixth capacitor, a fifth resistor, a sixth resistor and a fourth MOS transistor;

the input end of the first chip is connected to the first power supply, and the output end of the first chip is connected with the first end of the fifth capacitor;

the anode of the fifth diode is connected with the first power supply, and the cathode of the fifth diode is connected with the switch module;

the first end of the fifth resistor is connected with the second end of the fifth capacitor and the charging current limiting module respectively, and the second end of the fifth resistor is connected with the grid electrode of the fourth MOS tube;

the first end of the sixth capacitor is connected with the cathode of the fifth diode, and the second end of the sixth capacitor is grounded;

the drain electrode of the fourth MOS tube is connected with the switch module, and the source electrode of the fourth MOS tube is grounded;

and the first end of the sixth resistor is connected with the grid electrode of the fourth MOS tube, and the second end of the sixth resistor is grounded.

6. The intelligent switch of claim 5, wherein the charging current limiting module comprises a fifth MOS transistor, a second double-triode, a fourth chip, a seventh resistor, and a super capacitor;

the source electrode of the fifth MOS tube is connected with a first power supply, the grid electrode of the fifth MOS tube is connected with a sixth pin of the second double-triode, and the drain electrode of the fifth MOS tube is connected with the input end of the fourth chip;

the output end of the fourth chip is connected to the positive electrode of the super capacitor, and the enabling end of the fourth chip is connected with the output end of the second chip;

the negative electrode of the super capacitor is grounded, the positive electrode of the super capacitor outputs an energy storage power supply, and the energy storage power supply is input to the voltage monitoring module and the voltage adjusting module;

the first end of the seventh resistor is connected with the grid electrode of the fourth MOS tube, and the second end of the seventh resistor is connected with the fifth pin of the second double-triode;

and the second pin and the third pin of the second double-triode are connected with the output end of the third chip, and the first pin and the fourth pin are grounded.

7. The intelligent switch of claim 6, wherein the charge current limiting module further comprises a sixth MOS transistor and an eighth resistor;

the first end of the eighth resistor is connected with the input end of the fourth chip, and the second end of the eighth resistor is connected with the output end of the fourth chip;

and the drain electrode of the sixth MOS tube is connected with the enabling end of the fourth chip, the grid electrode of the sixth MOS tube is connected with the communication module, and the source electrode of the sixth MOS tube is grounded.

8. The intelligent switch of claim 7, wherein the voltage monitoring module comprises a fifth chip, a sixth chip, a ninth resistor, and a tenth resistor;

the input end of the fifth chip is connected with an energy storage power supply, and the output end of the fifth chip is connected with the power supply end of the sixth chip;

the first end of the ninth resistor is connected with the first end of the tenth resistor, the second end of the ninth resistor is connected to a power supply, and the second end of the tenth resistor is grounded;

and when the energy storage power supply input by the non-phase end is larger than the voltage threshold, the output end of the sixth chip outputs a high-level signal to the communication module and the voltage regulation module, and otherwise, outputs a low-level signal to the communication module and the voltage regulation module.

9. The intelligent switch of claim 7, wherein the voltage regulation module comprises a seventh chip, a sixth diode, and a seventh diode;

the seventh chip adjusts the received energy storage power supply to a power supply suitable for the communication module so as to supply power for the communication module;

the anode of the sixth diode is connected with the voltage monitoring module, and the cathode of the sixth diode is connected with the enabling end of the seventh chip;

and the anode of the seventh diode is connected with the communication module, the cathode of the seventh diode is connected with the enabling end of the seventh chip, and when the anode of the sixth diode and the anode of the seventh diode are both input with low-level signals, the seventh chip is controlled to stop working.

10. The intelligent switch of claim 8, wherein the switch module comprises at least one magnetic latching relay, a seventh MOS transistor, and an eighth MOS transistor;

the second pin of the magnetic latching relay is connected with the on-state power taking module, the third pin is a live wire output pin, the first pin is connected with the power-on control module, the fourth pin is connected with the drain electrode of the seventh MOS tube, and the fifth pin is connected with the power-on control module;

the grid electrode of the seventh MOS tube is connected with the communication module and used for controlling the opening of the switch module, and the source electrode of the seventh MOS tube is grounded;

and the grid electrode of the eighth MOS tube is connected with the communication module and is used for controlling the switch-off of the switch module, the drain electrode of the eighth MOS tube is connected with the first pin of the magnetic latching relay, and the source electrode of the eighth MOS tube is grounded.